Плата аудиоусилителя DC3.5V-5V 5W

Features:
1. Efficient power amplifier: capable of providing 5W output power, suitable for driving small speakers or portable audio devices.
2. Easy to use: Supports 3.5mm audio input, supports TWS pairing, enhances flexibility in use.
3. Low power design: Adopting a low-power circuit design, it can maintain low energy consumption even after long-term operation.
4. Compact size: The decoding board is designed to be compact and easy to integrate into various audio systems or devices, saving space.
5. Stability and compatibility: After rigorous testing, it ensures stable operation under various audio signal inputs.

Product Description:
After receiving the Bluetooth board, solder the speaker and 3.7V lithium battery according to the wiring diagram below, and then check that the battery is not reversed before starting the test. Turn on the switch and the blue indicator light should be on. If it is not on, quickly shut down and check if the battery is installed correctly. When the indicator light is on and there is a beeping sound, you can turn on your phone's Bluetooth and refresh the Bluetooth name. Find "DAU Audio" to connect and play your phone's music.
Regarding TWS pairing, if you have purchased two DAU Audio Bluetooth modules, stereo pairing is possible. You need to first turn off your phone's Bluetooth, then turn on both boards at the same time, wait for a few seconds to hear a prompt sound, and then one module's blue indicator light will remain on while the other module's indicator light will continue to flash, indicating successful TWS pairing. At this point, turn on your phone and connect to Bluetooth, and you will have a stereo wireless speaker. It is recommended to use a lithium battery with a capacity of 500mAh to 2000mAh and a capacity of 3.7V. The charger should be 5V 1A to 2A and charged using a USB 2.0 to Type-C cable.

Parameter:
Working voltage: DC3.5V-5V
Speaker: 2-4 Ω (3W-10W), can be connected to one 2 Ω speaker or two 4 Ω speakers at the same time
Charger: It is recommended to use 5V/1A
Charging interface: Type-c
Earphone jack: 3.5mm
Battery: 3.7V polymer lithium battery or 18650 lithium battery (customer's own battery required)
Size: 28.5mm * 17.3mm

Package include:
1X decoding board module

be careful:
*The battery and speaker interfaces of this Bluetooth module are both solder pads, which need to be soldered during use. Please prepare your own soldering tools. Welding damage caused by personal reasons does not support returns and refunds.

The following situations cannot be used normally:
1. Type-C direct power supply cannot be used. The Type-C charging interface has power limitations and can only be used when charging the battery. If you want to use DC power supply, it needs to be welded to the battery interface.
2. It is not possible to directly connect headphones to the 3.5mm headphone jack. This interface is an audio wired input interface.
3.1.5V batteries and low-quality lithium batteries cannot be used. The battery requires a 3.7V lithium battery with a protection board current of 4A (ampere) or above, otherwise it will not start or restart at high volume.
4. After welding the horn wire and battery wire, do not pull them hard, otherwise the solder pad will fall off and cannot be used.